def say_hello():
    print 'hello world'

#say_hello()

def min_max(a, b):
    '''Print the relation of two args.
    
    args should be integers.'''
    print a, 'vs', b
    if a < b:
        print a , 'is smaller'
    elif a > b:
        print b , 'is smaller'
    else:
        print a, 'equals to', b
    '''is the answer correct?'''

import random

print min_max.__doc__
min_max(random.randint(0,99), random.randint(0,99))

# def foo():
#     global x
#     print 'x is', x
#     x = random.randint(0, 10)
#     print 'change x to', x
# 
# x = random.randint(0, 10)
# print 'main block, x is', x
# foo()
# if True:
#     print 'main block, x is', x

def say(mes = 'hi', times = 2):
    print mes * times

# say('hello')
# say('world', 2)
# say()

# def max(a, b):
#     if a > b:
#         return a
#     return b
# 
# def foo(a, b = 2, c = 3):
#     print 'a is', a, 'b is', b, 'c is', c
#     return max(max(a, b), max(b, c))

#print foo(c = random.randint(0, 128), b = random.randint(0, 128), a = random.randint(0, 128))

# def bar():
#     pass
# 
# print bar()
